-- @testpoint: opengauss关键字delete(非保留)，作为函数名 带单引号、反引号时 合理报错

--关键字不带引号-成功
drop function if exists delete(i integer);
create function delete(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/

--清理环境
drop function if exists delete(i integer);

--关键字带双引号-成功
drop function if exists "delete"(i integer);
create function "delete"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/

--清理环境
drop function if exists delete(i integer);

--关键字带单引号-合理报错
drop function if exists 'delete'(i integer);
create function 'delete'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/

--关键字带反引号-合理报错
drop function if exists `delete`(i integer);
create function `delete`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
